Mounting for bus seats



Oct. 26, 1937. c. F. KRUMHAR 'ET AL MOUNTING FOR BUS SEATS Original Filed Dec. 29, 1934 lllllkllllllli nveniors HARRY H. HA l/VES Patented Oct. 26, 1937 UNITED STATES MOUNTING FOR BUS SEATS Carl F. Krumhar, Kent, and Harry H. Haines, Akron, Ohio, assignors to Tru-Car, Inc., Kent, Ohio, a corporation of Ohio Original application December 29, 1934, Serial No. 759,732. Divided and this application July 7, 1936, Serial No. 89,350

5 Claims.

This invention relates to mounting or supportin g devices, and more particularly to a shock and vibration absorbing mounting for vehicle seats.

This application is a division of our prior application Serial No. 759,732, filed December 29, 1934.

rIhe general object of our invention is to provide a resilient vibration and shock absorbing mounting device which can be readily installed and economically manufactured. More specifically, an object of our invention is to provide a shock and vibration absorbing mounting for bus seats whereby the seats can be readily secured to the oor of a bus and which will function to prevent the transmission of vibrations and shocks from the floor to the bus seat. Another object of our invention is to provide such a mounting device wherein there is no metallic contact between the frame of the bus seat and the floor.

Further objects and advantages of our invention will become apparent from the following description of a preferred form thereof, reference being made to the accompanying drawing, wherein: Figure 1 is an elevation partially in section illustrating our mounting device as applied to a bus seat having a tubular frame; Figure 2 isian elevation of the device before installation; Figure 3 is a plan View of the device illustrated in Figure 2; and Figure 4 is a sectional view of the mounting member to which the tubular leg member may be secured.

As shown in Figure l, our device is particularly adapted for securing a tubular member Il), such as a bus seat leg of the character illustrated in detail in our prior application, to a bus oor indicated at F. The mounting member preferably7 comprises a live rubber collar I I having vulcanized thereto a metal plate I2 and having molded and/or vulcanized therein the cup-like assembly illustrated particularly in Figure 4 and comprising a washer or perforated plate I4 to which a sleeve I5 may be secured as by arc welding, the weld being indicated at I6.

The plate I2, washer or plate I4 and sleeve I5 are preferably made of steel, and before vulcanizing these members may be suitably coated with brass or copper in a manner known to those skilled in the art, so that when the collar II is molded and vulcanized a secure connection will be made between the rubber of the collar and the metallic members.

rIhe mounting device may conveniently be secured to the floor F by means of a carriage bolt I'I and a nut I8, the plate I2 being provided with a square opening I 9, so that the square shank 20 of the carriage bolt will not turn when the nut I8 is tightened.

In order to conveniently secure the tubular leg member I0 to the sleeve I5, the sleeve is dimen- 5 sioned so that the leg will fit within it closely, and so that the end of the leg will rest on the shoulder 2I formed by the inwardly projecting portion of the plate or Washer I4. The leg is then secured to the sleeve by a bolt 22 passing through l0 aligned apertures in the sleeve and the leg and fastened by a nut 23. We prefer to drill the registering openings in the sleeve and leg after the mounting members have been installed in the vehicle and the legs positioned therein, so that 15 the necessary openings can be drilled in a single operation. n

If desired the sleeve I5 can be split so that the bolt 22 will exert a clamping action thereon to rmly clamp the leg therein, but ordinarily this 2o is unnecessary because it is possible to obtain commercial tubing of sufciently accurate dimensions to obtain a snug t without employing a slotted sleeve.

It will be seen that by our mounting a block of live resilient rubber or other similar material is interposed between the floor of the Vehicle and the leg of the chair mounted therein. There is no metallic contact between the vehicle floor and the chair frame, and by this construction many of the vibrations present in the floor are absorbed by the rubber and not transmitted to the bus seat. The mounting is such that not only are vertical vibrations absorbed, but the sleeve and the leg mounted therein may oscillate slightly with respect to the floor and the plate I2 so that many of the fore and aft vibrations and shocks will be absorbed.

The mounting is particularly efcient in absorbing the vibrations of high frequency and of relatively small magnitude which are present in the floors of all present day busses, and which impose severe strains on the bus seats. These vibrations which are in large part absorbed by our mounting have in the past made it impractical to employ bus seats having tubular frames because of the crystallization of the frames and ultimate failure thereof. By employing our mounting devices it is possible to construct bus frames of light gauge steel tubing without fear of failure of the frame by reason of crystallization of the metal.

Preferably we employ one of our mounting devices with each leg of the bus seat. Inasmuch as each mounting device may be secured to the bus rails frequently employed in city busses. When used for this purpose the mounting devices may be employed at both endsof-fthe-'Stanchions-,or

the like, for instance, in the ceiling and floor'cf-v the bus, and are particularlyadvantageous in.

that they permit the bodyf of the busto weave without imposing any substantial stresses on the;V

stanchions.

It will also be apparent to those skilled in the art thatlour device may be employed for mounting other than tubular members. It is therefore to be understood that our patent is not limited to the preferred form of our. invention described herein: orin any manner other than by the ap-v pended claims-When given the range of equivalents,V to which' our. patenti maybe entitled.

We claim: p Y

1. In combination, achair leg, asupporting surface and lmeans to-secure rsaid chair leg to said supporting surface` comprising a metallic disc in contact with and` secured to said surface, a rubber cushion vulcanized to said disc, a cup-like member arrangedpartly within said cushion and vulcanized thereto, said cup-like member projecting beyond: the upper. surface of said cushion and proportioned to receive saidV chair leg', and fastening meansextending through said cup-like member and said chair leg. Y

-2. En combination. a chair leg, ar supporting surface and; means to secure said chair leg to saidsupporting surface comprisinga metallic Vdisc in contact with and secured to said surface, a rubber cushion member vulcanized to said disc,

, a` cup-like. member comprising a disc` embedded in said. cushion member and a sleeve welded to saidvdisc,and'projecting from the cushion member, said sleeve proportioned to receive and surround said chair leg, said disc serving as a supportvf'or the. bottom surface of said chair leg, aligned apertures formed in said chair leg and said sleeve in that portion of the sleeve which, projects beyond the cushionand fastening means extending transversely through said aligned apertures.VV

3. In combinatioma chair leg, a cushion support therefor anda supporting surface,.said cushion support comprising an apertured disc in contact with said'surface, a bolt anchored to said disc and projecting into said surface for securement thereto, a rubber cushionmember vulcan- For example, it may be advantageouslyV used to support the vertical stanchions or hand v f, side thereof, said metallic disc provided with an aperture to receive'the shank of a headed fasteningbolt extending-'through said aperture and into said' supporting surface, a second metallic disc spaced from. and; parallel to said rst disc, said second Ymetallic disc being provided with an aperture concentric with the aperture in said first disc.- and .the aperture.` of.l said secondv disc exceedingY the diameter of the aperture yinthefirst disc to facilitatethe passage therethrough'- of said headed bolt, a metallic sleeve welded to1said second f disc vandfproportioned ftoA vextend upwardly beyond the upper;` surface' of. said rubber cushion, the internal diameter of said sleeve exceeding the diameter of the aperture in said second disc whereby an annular supporting ledge is formedwithin said' cushion; said.r sleeve proportioned to. receive aI chain leg, andthe lower surface ofsaid chairleg adaptedftoabut said supporting ledge.

5; Means forv anchoring a chair to asupporting surfacecomprisingY al rubber cushion member havingv aY metallic disc vulcanizedtothe un,- der side thereof, said-metallic disc provided with an-.aperture to receive theshankl of a headedfasteningY boltlextending through said. aperture and into saidsupporting, surface, a second metallic disc spaced from andparallel tosaid rst disc, said second metallic, disc. being.v provided with` an aperture. concentricwith theaperture -in said first discv and the` aperture. of said second disc exf ceedingthe. diameter oftheaperturein the rst disc to facilitaterthepassage therethrough of. said headed .bolt,.a metallicsleeveiwelded.to said sec.- ond, disc and proportioned to.. extend upwardly beyond` the upper surface ofrsaid rubber cushion, theinternal diameter of. saidsleeve. exceeding. the diameterv4 of theY aperture. in. said.. secondd disc whereby an annular supporting` ledge is formed. within said cushion, said" sleeve proportioned to receive a chair leg, the lower surface of said chair leg. adapted to abut said'supporting ledge, aligned apertures formedin said sleeve and chair leg and fastening, means extending. through said apertures to preventY Withdrawal of the chair leg from said sleeve.

, CARLF. KRUMHAR.

HARRY H'. HAINES.' 

